[gradpoint-question ak-4] which equation represents a combustion reaction?

a: ca + 2h cl > cacl₂ + h₂
b: pb(no₃)₂ +2hcl > pbcl₂ + 2hno₃
c: 2so₂ + o₂ > 2so₃
d: 2c₂h₆ + 7o₂ > 4co₂ + 6h₂o

this question is worth 40 points. so answer carefully. i'm bad at chemical equations.

b. acid is the correct answer @jayxboof all social media

acid : acids are those which accepts an electron-pairs.

base : bases are those which donates ab electron-pairs.

alkali : it is a base that dissolves in water. it is basically a base and the ph greater than 7.

hydroxide ion : it is a poly-atomic ion which is negatively charged.